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Java

Posted by Tinashe chikamba
Tinashe chikamba
1,657 Points

illegal arguments

Protect the call to kart.drive by handling the IllegalArgumentException that is thrown when not enough battery remains. Print out the message from the exception to the screen as you catch the exception.

Tinashe chikamba
Tinashe chikamba
1,657 Points

class Example {

public static void main(String[] args) { GoKart kart = new GoKart("purple"); if (kart.isBatteryEmpty()) { System.out.println("The battery is empty"); } kart.drive(42); } catch (IllegalArgumentException iae) { System.out.println(iae.getMessage()); } }

what am i missing

4 Answers

Tinashe chikamba
Tinashe chikamba
1,657 Points

thanks it really helped

alastair cooper
alastair cooper
30,617 Points
alastair cooper
alastair cooper
30,617 Points

sorry, the call to drive should be included in the try block. Like this...

public static void main(String[] args) {
        GoKart kart = new GoKart("purple");
        if (kart.isBatteryEmpty()) {
            System.out.println("The battery is empty");
        }
        try {
            kart.drive(42);
        } catch(IllegalArgumentException iae){
            System.out.println(iae.getMessage());
        }
}

If this doesn't work, follow this link...

https://teamtreehouse.com/community/protect-the-call-to-kartdrive-by-handling-the-illegalargumentexception-that-is-thrown-when-not-enough-battery-remains

hope this helps

alastair cooper
alastair cooper
30,617 Points
alastair cooper
alastair cooper
30,617 Points

you have a catch block, but no try block before it.

Try this...

public static void main(String[] args) {
    try{
        GoKart kart = new GoKart("purple");
        if (kart.isBatteryEmpty()) {
            System.out.println("The battery is empty");
        }
        kart.drive(42);
    } catch (IllegalArgumentException iae) {
        System.out.println(iae.getMessage());
    }
}

hope this helps

PS to make code snippets appear like this (in a black console screen), see the link 'Markdown Cheatsheet' below

Tinashe chikamba
Tinashe chikamba
1,657 Points

./Example.java:9: error: illegal start of type } catch (IllegalArgumentException iae) { ^ 1 error

kart.drive(42); } catch (IllegalArgumentException iae) { System.out.println(iae.getMessage()); } } so i tryed the code u gave but its still giving me this error

alastair cooper
alastair cooper
30,617 Points
alastair cooper
alastair cooper
30,617 Points

You need to surround it with a try catch block. In the catch block you can print out the exception message.

Show me what you have tried and I'll help you fix it

Tinashe chikamba
Tinashe chikamba
1,657 Points

thanks it worked